Arm backend: Upgrade vela to 4.4.1

[oscarandersson8218]

Also remove xfails from MHA tests.

cc @freddan80 @per @zingo @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/14890

• 📄 Preview Python docs built from this PR

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❌ 6 New Failures, 1 Cancelled Job, 6 Unrelated Failures

As of commit 7e1c1e5 with merge base 94c892c ():

NEW FAILURES - The following jobs have failed:

• pull / test-qnn-wheel-packages-linux (3.10) / linux-job (gh)
  RuntimeError: Command docker exec -t 12f32141ab5cbb60ecdb6756b159f3c1ed6f8f7a740bbb6107628521e45a3a48 /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.11) / linux-job (gh)
  RuntimeError: Command docker exec -t b19905dd762f5e46e309d02ab17381128dc9f07cf905c4d6a18ce4ac1ebe1e4b /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.12) / linux-job (gh)
  RuntimeError: Command docker exec -t 4c87ab696a192c13a110164deee511c283d3368fd4fda0581457a85aabdcef3e /exec failed with exit code 1
• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 5fd95ce2808911e8af249a7fe647b1975cb72148a851d907c85bf7c9fbb01278 /exec failed with exit code 1
• pull / unittest-arm-backend-with-no-fvp (test_pytest_ops) / linux-job (gh)
  RuntimeError: Command docker exec -t 31c08b3222cf95d4d8a2f7765a4713dd52a0b160bb7541f13ad26b3492daa297 /exec failed with exit code 1
• Test CUDA Builds / test-voxtral-cuda-e2e / linux-job (gh)
  RuntimeError: Command docker exec -t 4fb0e55525c24e823659be54a050023a92842d5ee16549c7d18eeedf6491266e /exec failed with exit code 2

CANCELLED JOB - The following job was cancelled. Please retry:

• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• pull / test-vulkan-operators-linux / linux-job (gh) (detected as infra flaky with no log or failing log classifier)
• trunk / test-coreml-delegate / macos-job (gh) (detected as infra flaky with no log or failing log classifier)
• trunk / test-models-linux-aarch64 (mv3, xnnpack-quantization-delegation, linux.arm64.2xlarge) / linux-job (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / windows / windows-job (gh) (trunk failure)
  Process completed with exit code 1.
• pull / unittest-editable / windows / windows-job (gh) (trunk failure)
  Process completed with exit code 1.
• trunk / unittest-release / windows / windows-job (gh) (trunk failure)
  Process completed with exit code 1.

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[meta-codesync]

@digantdesai has imported this pull request. If you are a Meta employee, you can view this in D84357937.

[zingo]

@pytorchbot cherry-pick --onto release/1.0 -c regression

[pytorchbot]

Cherry picking #14890

The cherry pick PR is at #15036 and it is recommended to link a regression cherry pick PR with an issue. The following tracker issues are updated:

• [v1.0.0] Release Tracker #14288 (comment)

Details for Dev Infra team

Raised by workflow job